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Current system
10084+1158
STFB 6 AB
Regulus


Nearby doubles
6' : 10080+1201
DAM2032

8' : 10086+1205
DAM2042

9' : 10085+1206
BRT1267

24' : 10096+1212
DAM2072

25' : 10071+1214
OSW 52

28' : 10083+1131
TDS7052

33' : 10102+1217
HEI 354

33' : 10106+1204
LDS3960

35' : 10095+1229
DAM2070

39' : 10093+1122
GWP1303

47' : 10115+1148
DAM2110

63' : 10123+1143
J 2074AB

66' : 10114+1246
SLW 443

69' : 10130+1151
DAM2140

72' : 10132+1147
HEI 355

77' : 10040+1116
HJ 2519

79' : 10135+1136
GOM 10

89' : 10143+1207
HDS1474

97' : 10116+1321
HU 874

98' : 10037+1049
UC 147

99' : 10110+1328
AHD 36

100' : 10152+1153
HU 1254AB

101' : 10138+1056
DAM2155

103' : 10081+1016
UC 1881

104' : 10034+1045
UC 146

105' : 10138+1051
OCC 598



Selections
Full WDS
Binocular doubles
Binary Systems
Triple Systems
Quadruple Systems
Multiple Systems
Neglected List I
Neglected List II
Observed
Herschel, W.
Herschel, J.F.W.
Struve, Otto
Struve, F.G.W.

10084+1158 STFB 6 AB (Regulus)

 
 
10h 08m 22.31s +11° 58' 01.9" P.A. 304.00 sep 179.2 mag 1.40,8.24 Sp B7V dist. 24.31 pc (79.3 l.y.)
 
 
Coord 2000 10084+1158 Discov num STFB  6 Comp AB Coord arcsec 2000 10 08 22.31 +11 58 01.9
Date first 1779 Date last 2019 Obs 67
Pa first 307 Pa last 303.5 P.A. Now (θ) 303.5°
Sep first 168.3 Sep last 179.225 Sep. Now (ρ) 179.225"
Mag pri 1.40 Mag sec 8.24 delta mag (ΔM) 6.84 Spectral class B7V (blue-white)
Pri motion ra -249 Sec motion ra -254
Pri motion dec +006 Sec motion dec +008
Notes N T (See Notes, Parallax indicates physical)
rPM=0.021 (< 0.3, Physical double)
This double is physical.
 
 
10084+1158 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show Regulus 98967 10 08 22 +11 58 02 STFB 6 AB 2019 67 304 179.2 1.40 8.24 6.84 <===
Show 98967 10 08 22 +11 58 02 HDO 127 AD 2015 7 274 195.3 1.40 12.10 10.70
Show 98966 10 08 13 +11 59 49 HDO 127 BC 2019 20 94 2.2 8.24 13.20 4.96
Show 98966 10 08 13 +11 59 49 HDO 127 BD 2015 10 211 109.1 8.24 12.10 3.86
Quadruple system
4 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Common name Regulus Var name NSV4750 Leo Constellation Leo SAO 98967
HIP 49669 Tycho2 0833-01381-1 HD 87901 HR 3982
GC 13926 ADS 7654 BD BD+12 2149 Bayer Alpha Leonis
Bayer name Alp Leo Flamsteed 32 Leonis Flamsteed name 32 Leo FK5 380
Distance 24.31 Distance ly 79.3 Bayer greek α Leo
Other names Qalb al-Asad, Cor Leonis, Al Kalb al asad, Kabeleced, Kabelaced, Regolo
Meaning prince, little king
 
 
WDS 10084+1158 STFB 6 AB (Regulus) : NOTES
 
 
discov_num notes refcode
STFB 6 alp Leo = 32 Leo = Regulus. LDS 913.
Intensity Interferometer Limb-darkened diameter 1.37 +/- 0.06 mas. HBr1974
CHARA Array major, minor axis diameter : 1.65, 1.25 +/- 0.02 mas, CIA2005
polar radius = 3.14 +/- 0.06 \rsun, T = 15400 +/- 1400 K.
equatorial radius = 4.16 +/- 0.08 \rsun, T = 10314 +/- 1000 K.
mean T = 12901 +/- 500 K, M = 3.4 +/- 0.2 \msun, L = 347 +/- 36 \lsun.
NPOI Limb-darkened diameter 1.664 +/- 0.037 mas, Sp = B6IV, NOI2018
R = 4.35 +/- 0.10 \rsun, Teff = 11668 +/-195 K,
L = 316.2 +/-16.7 \lsun, M = 3.57 +/- 0.04 \msun,
Age = 0.16 +/- 0.01 Gyr.
AB: H 6 11. MEv2010
 
 
REFERENCES
 
 
refcode metd author reference
CIA2005 not j McAlister, H.A., ten Brummelaar, T.A., Gies, D.R., Huang, W., Bagnuolo, Jr., W.G., 2005ApJ...628..439M
CIA2005 Shure, M.A., Sturmann, J., Sturmann, L., Turner, N.H., Taylor, S.F., Berger, D.H., .
CIA2005 Baines, E.K., Grundstrom, E. & Ogden, C. .
CIA2005 ApJ 628, 439, 2005 .
HBr1974 - Hanbury Brown, R., Davis, J., & Allen, L.R. 1974MNRAS.167..121H
HBr1974 MNRAS 167, 121, 1974
MEv2010 - MacEvoy, B. ...................
MEv2010 private communication, 2010 (see http://www.handprint.com/ASTRO/index.html)
NOI2018 not j Baines, E.K., Armstrong, J.T., Schmitt, H.R., Zavala, R.T., Benson, J.A., Hutter, 2018AJ....155...30B
NOI2018 D.J., Tycner, C. & van Belle, G.T.
NOI2018 AJ 155, 30, 2018
 
 
DISCOVERER
 
 
idgroup discov author
1 HDO Harvard Obs.
10 STF Struve, F.G.W.
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
10084+1158 STFB 6 AB 2007 48 308 175.0 1.40 8.24 B7V N DV 100822.31+115801.9
10084+1158 STFB 6 AB 2009 52 308 175.8 1.40 8.24 B7V N DV 100822.31+115801.9
10084+1158 STFB 6 AB 2010 55 308 175.1 1.40 8.24 B7V NVD 100822.31+115801.9
10084+1158 STFB 6 AB 2011 57 308 174.1 1.40 8.24 B7V NVD 100822.31+115801.9
10084+1158 STFB 6 AB 2012 58 308 174.3 1.40 8.24 B7V NVD 100822.31+115801.9
10084+1158 STFB 6 AB 2015 62 307 175.1 1.40 8.24 B7V NVD 100822.31+115801.9
10084+1158 STFB 6 AB 2016 65 308 175.5 1.40 8.24 B7V NV 100822.31+115801.9
10084+1158 STFB 6 AB 2019 66 304 179.2 1.40 8.24 B7V NV 100822.31+115801.9

If you need more information about this double, apply for a data request form to the WDS.

 
 
WDS 10084+1158 STFB 6 AB (Regulus) : VISUAL OBSERVATIONS REPORTS
 
 
Show date username difficulty separation pa_estim interest notes
Show 11/05/02 voyager75 very easy separated   scarce interest Separatissima, Osservata a 43X con 21mm.

 
 
WDS 10084+1158 STFB 6 AB (Regulus) : MEASURES
 
 
Records found: 1
Show date username difficulty sep sep_sigma pa pa_sigma delta_mag # notes
Show 17/04/24 Zeitgenosse   175.50   307.60     1
 
 
WDS 10084+1158 (Regulus) : VIRTUAL EYEPIECE
 
 

10084+1158 STFB 6A mag 1.4 Sp B7V 10084+1158 HDO 127B sep 176.0 P.A. 307.50 mag 8.24 Sp K2V 10084+1158 HDO 127C sep 174.2 P.A. 307.90 mag 13.2 10084+1158 HDO 127D sep 191.1 P.A. 274.40 mag 12.1 virtual eyepiece
Click on the map to see the double of your interest.
Pass over with the mouse cursor to display the catalog designation.
Radius:
Components only
 
 
WDS 10084+1158 (Regulus) : ALADIN DSS IMAGE @ 10h 08m 22.31s +11° 58' 01.9"
 
 
 
 
WDS 10084+1158 STFB 6 AB (Regulus) : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

10084+1158 STFB 6AB (Regulus) distance=0' 10084+1158 HDO 127BC distance=3' 10084+1158 HDO 127BD distance=3' 10080+1201 DAM2032 distance=6' 10086+1205 DAM2042 distance=8' 10085+1206 BRT1267 distance=9' 10096+1212 DAM2072 distance=24' 10071+1214 OSW 52 distance=25' 10083+1131 TDS7052 distance=28' 10102+1217 HEI 354 distance=33' 10106+1204 LDS3960 distance=33' 10095+1229 DAM2070 distance=35' 10093+1122 GWP1303 distance=39' 10115+1148 DAM2110 distance=47' 10123+1143 J 2074AB distance=63' 10123+1143 J 2074AC distance=63' 10114+1246 SLW 443 distance=66' 10130+1151 DAM2140 distance=69' 10132+1147 HEI 355 distance=72' 10040+1116 HJ 2519 distance=77' 10135+1136 GOM 10 distance=79' 10143+1207 HDS1474 distance=89' 10116+1321 HU 874 distance=97' 10037+1049 UC 147 distance=98' 10110+1328 AHD 36 distance=99' 10152+1153 HU 1254AB distance=100' 10152+1153 DAM2188AB,C distance=100' 10138+1056 DAM2155 distance=101' 10081+1016 UC 1881 distance=103' 10034+1045 UC 146 distance=104' 10138+1051 OCC 598 distance=105' 10160+1200 HJ 156BC distance=114' 10160+1200 HJ 156AB distance=114' 10160+1200 ABH 74AD distance=114' 10160+1200 HJ 156AC distance=114' 10150+1300 SLW 451 distance=115' 10160+1123 GWP1333 distance=117' 10113+1001 BU 1425FG distance=118' 10079+1000 GAN 5 distance=119' 10166+1155 LAS 15 distance=122' 10088+1401 BPMA 40 distance=124' 10113+1001 BU 1425AC distance=125' 10113+1001 BU 1425CD distance=130' 10113+1001 BU 1425DE distance=130' 10113+0956 SMH 14 distance=130' 10028+1339 SLW 426 distance=131' 10022+1334 GRV 808 distance=132' 10173+1210 J 1126 distance=133' 10174+1239 CVR 555 distance=139' 10028+1006 CBL 298 distance=139' 10038+0957 GWP1281 distance=139' grafico limitrofi
Click on the map to see the double of your interest.
Pass over with the mouse cursor to display the catalog designation.
Show name coord_2000 discov# comp pa sep dist(')
Show Regulus 10084+1158 STFB 6 AB 304 179.2
Show Regulus 10084+1158 HDO 127 AD 274 195.3
Show 10084+1158 HDO 127 BC 94 2.2 3
Show 10084+1158 HDO 127 BD 211 109.1 3
Show 10080+1201 DAM2032 178 4.4 6
Show 10086+1205 DAM2042 259 6.5 8
Show 10085+1206 BRT1267 3.8 9
Show 10096+1212 DAM2072 136 2.5 24
Show 10071+1214 OSW 52 236 67.1 25
Show 10083+1131 TDS7052 294 2.3 28
Show 10102+1217 HEI 354 230 4.0 33
Show 10106+1204 LDS3960 47 7.6 33
Show 10095+1229 DAM2070 13 6.8 35
Show 10093+1122 GWP1303 64 16.5 39
Show 10115+1148 DAM2110 70 9.9 47
Show 10123+1143 J 2074 AB 12 2.2 63
Show 10123+1143 J 2074 AC 207 28.8 63
Show 10114+1246 SLW 443 100 100.8 66
Show 10130+1151 DAM2140 208 5.0 69
Show 10132+1147 HEI 355 205 0.3 72
Show 10040+1116 HJ 2519 38 17.2 77
Show 10135+1136 GOM 10 310 12.9 79
Show 10143+1207 HDS1474 296 0.9 89
Show 10116+1321 HU 874 291 0.1 97
Show 10037+1049 UC 147 85 37.6 98
Show 10110+1328 AHD 36 118 14.7 99
Show 10152+1153 HU 1254 AB 15 0.6 100
Show 10152+1153 DAM2188 AB,C 135 17.3 100
Show 10138+1056 DAM2155 281 8.0 101
Show 10081+1016 UC 1881 18 44.3 103
Show 10034+1045 UC 146 162 18.6 104
Show 10138+1051 OCC 598 -1 0.1 105
Show 10160+1200 HJ 156 BC 355 29.7 114
Show 10160+1200 HJ 156 AB 225 18.6 114
Show 10160+1200 ABH 74 AD 210 62.4 114
Show 10160+1200 HJ 156 AC 316 22.9 114
Show 10150+1300 SLW 451 176 152.3 115
Show 10160+1123 GWP1333 212 9.6 117
Show 10113+1001 BU 1425 FG 183 67.2 118
Show 10079+1000 GAN 5 41 8.2 119
Show 10166+1155 LAS 15 319 4.1 122
Show 10088+1401 BPMA 40 294 231.5 124
Show 10113+1001 BU 1425 AC 203 339.8 125
Show 10113+1001 BU 1425 CD 233 134.0 130
Show 10113+1001 BU 1425 DE 196 152.5 130
Show 10113+0956 SMH 14 4 7.6 130
Show 10028+1339 SLW 426 172 22.8 131
Show 10022+1334 GRV 808 70 34.6 132
Show 10173+1210 J 1126 307 2.3 133
Show 10174+1239 CVR 555 108 12.1 139
Show 10028+1006 CBL 298 314 69.9 139

 
 
WDS 10084+1158 : COMPONENTS
 
 
  A B C
B pa=307.5°
sep=176.02"
 
C pa=307.9°
sep=174.24"
pa=94.2°
sep=2.14"
 
D pa=274.4°
sep=191.08"
pa=208.8°
sep=105.50"
pa=209.8°
sep=106.41"
 
 
10084+1158 A
 
 
Common name Regulus Meaning prince, little king Other names Qalb al-Asad, Cor Leonis, Al Kalb al asad, Kabeleced, Kabelaced, Regolo Coord arcsec 2000 100822.31+115801.9
Mag 1.4 Spectral class B7V (blue-white) PmRA -249.00 PmDE 6.0
SAO 98967 HIP 49669 Tycho2 0833-01381-1 HD 87901
HR 3982 GC 13926 BD BD+12 2149 Bayer Alpha Leonis
Bayer name Alp Leo Flamsteed 32 Leonis Flamsteed name 32 Leo FK5 380
SAO
SAO 98967 DelFlag RA1950 PmRA1950 -0.017
DE1950 PmDE1950 0.003 Vmag 1.3 SpType B8
Double code Source 74 CatNum 380 DM BD+12 2149
DMcomp BDsup HD 87901 M HD 0
GC 13926 RA1950rad 2.64291187 DE1950rad 0.21314611 PmRA2000 -0.0169
PmDE2000 0.008
Hipparcos
Catalog H HIP 49669 Proxy RAhms 10 08 22.46
DEdms +11 58 01.9 Vmag 1.36 VarFlag R Vmag G
RAdeg 152.094 DEdeg 11.9672 AstroRef Plx 42.09
CCDM 10083+1159 N CCDM I Nsys 1 Ncomp 1
MultFlag Source Qual M HIP
Theta Rho HD 87901 BD BD+12 2149
CD CP Dm number +12 2149 VIred -0.1
SpType B7V R SpType Coord arcsec 2000 100822.46+115801.9
Hipparcos 2
HIP 49669 Sn 5 So 0 Nc 1
RArad 2.6545337495 DErad 0.2088669583 Plx 41.13 PmRA -248.73
PmDE 5.59 E RArad 0.32 E DErad 0.21 E Plx 0.35
E pmRA 0.35 E pmDE 0.21 Hpmag 1.3232 E Hpmag 0.0006
SHp 0.005 VA 0 BV -0.087 E BV 0.015
VI -0.1
 
 
10084+1158 B
 
 
Coord arcsec 2000 100812.79+115949.0 Coord calc 100812.79+115949.0 Mag 8.24 Spectral class K2V (yellow-orange)
PmRA -254.00 PmDE 8.0 SAO 98966 Tycho2 0833-00134-1
HD 87884 GC 13922 DM BD+12 2147 Calc delta mag 6.84
Tycho2
Tycho2 0833-00134-1 Pflag RAmdeg 152.05333022 DEmdeg 11.99696755
PmRA -241.1 PmDE 12.2 E RAmdeg 7 E DEmdeg 9
E pmRA 0.9 E pmDE 1.0 EpRAm 1990.84 EpDEm 1989.88
Num 15 Q RAmdeg 2.3 Q DEmdeg 1.1 Q pmRA 2.3
Q pmDE 1.1 BTmag 9.259 E BTmag 0.020 VTmag 8.243
E VTmag 0.013 Prox 999 TYC T HIP
CCDM RAdeg 152.05388583 DEdeg 11.99694000 EpRA 1990 1.86
EpDE 1990 1.53 E RAdeg 7.0 E DEdeg 8.8 Posflg
Corr 0.0
SAO
SAO 98966 DelFlag RA1950 PmRA1950 -0.016
DE1950 PmDE1950 0 Vmag 7.6 SpType G
Double code Source 70 CatNum 13922 DM BD+12 2147
DMcomp BDsup HD 87884 M HD 0
GC 13922 RA1950rad 2.6422175 DE1950rad 0.21366127 PmRA2000 -0.0159
PmDE2000 0.005
 
 
10084+1158 C
 
 
Coord arcsec 2000 100812.94+115948.8 Mag 13.2 PmRA -225.00 PmDE 9.0
Calc delta mag 11.8 Calc coord yes
 
 
10084+1158 D
 
 
Coord arcsec 2000 100809.33+115816.5 Mag 12.1 PmRA -23.00 PmDE -16.0
Calc delta mag 10.7 Calc coord yes